Connellite specimens for sale
4 for sale · $250–$9,500 USD
7 in the gallery
Connellite is a copper sulfate chloride mineral that forms as blue-green crystals and sometimes crusts or botryoidal masses. It typically displays a vitreous to submetallic luster and can occur in radiating or tabular crystal habits, revealing its distinctive aural-like edges in hand specimens. The mineral’s composition includes copper, sulfate, chloride, and water, contributing to its characteristic color and hydration state, while localities have produced well-formed crystals and attractive aggregates. Classic specimens come from notable localities in the United Kingdom and the United States, with other important sources in Russia that have yielded vivid, well-terminated crystals.
- Formula
- Cu19(SO4)(OH)32Cl4 · 3H2O
- Rarity
- Rare
- Stability
- Moderately Stable
- Collector interest
- High Interest
- Classification notes
- Sulfates (copper) with hydroxide and chloride; IMA group not specified
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Where Connellite is found
About Connellite
Collectors prize connellite for its crisp crystal forms and the rarity of well-preserved sulfate chloride minerals in copper-rich environments. Fine pieces show sharp terminations and delicate blue-green color, often contrasting with darker matrix material. Its association with secondary copper deposits and mesothermal environments makes connellite a sought-after highlight in mineral cabinets, appreciated for both its aesthetic appeal and its insight into alteration processes in copper ore systems.